55010531521 has 16 divisors (see below), whose sum is σ = 62635120128. Its totient is φ = 47869244800.

The previous prime is 55010531483. The next prime is 55010531531. The reversal of 55010531521 is 12513501055.

It is a cyclic number.

It is not a de Polignac number, because 55010531521 - 2³¹ = 52863047873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55010531521.

It is not an unprimeable number, because it can be changed into a prime (55010531531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126801 + ... + 1174606.

It is an arithmetic number, because the mean of its divisors is an integer number (3914695008).

Almost surely, 2^55010531521 is an apocalyptic number.

It is an amenable number.

55010531521 is a deficient number, since it is larger than the sum of its proper divisors (7624588607).

55010531521 is a wasteful number, since it uses less digits than its factorization.

55010531521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301512.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 55010531521 in words is "fifty-five billion, ten million, five hundred thirty-one thousand, five hundred twenty-one".